
    def func(lst):
        for i in range(len(lst) - 1):
            for j in range(i + 1, len(lst)):
                if lst[i] < lst[j] :
                    lst.insert(i, lst.pop(j))
                else:
                    pass
        else:
            return lst
        return -1
     
    lst1 = [6, 2, 4, 1, 5, 9]
    lst2 = func(lst1)
    lst2[3:-2] = []
    print lst1